PRECAST CONCRETE WALL PANELS FABRICATION AND DELIVERY

Concrete mix proportioning is generally the same as cast-in-place concrete, but greater emphasis is placed on the ability of the mix to produce the desired finish and durability of the concrete surface. Factors to be considered in the concrete mix are:
- Finish, size and shape of the precast units.
- Method of consolidation.
- Maximum size of coarse aggregate.
- Required comprehensive strength.
- Required surface finish.
- Exposure to severe and the other condition.
Handling and storage procedures should not cause structure damage, detrimental cracking, architectural impairment, or permanent distortion when a panel is being lifted or stripped from the mold, moved to various location for finishing or storage, stored, or loaded or unloaded for delivery and erection. Structural calculation should verify that the panel can be handled in the desired manner, otherwise it should be braced during stripping, handling, transportation and delivery operation.